Common Name(s): Black Spruce Scientific Name: Picea mariana Distribution: Northern North America Tree Size: 30-50 ft (10-15 m) tall, 1-1.5 ft (.3-.5 m) trunk diameter Average Dried Weight: 28 lbs/ft3 (450 kg/m3) Specific Gravity (Basic, 12% MC): .38, .45 Janka Hardness: 520 lbf (2,320 N) Modulus of Rupture: 10,100 lbf/in2 (69.7 MPa) Elastic Modulus: 1,523,000 lbf/in2 (10.50 … Continue reading Black Spruce